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DS280DF810: DS280DF810 OR DS280MB810 TEST PIN and cross-point

Frank Xiao
Genius 12055 points
Part Number: DS280DF810
Other Parts Discussed in Thread: DS280MB810,

Hi team,

My customer want to use the DS280DF810 /DS280MB810  cross-point feature.

From the datasheet, we can achieve it with SMBUS configuration. Currently my customer wants to make the transition within 50ms, whether the time is ok(how long it will take?

Whether we can use pin configuration to get the  cross-point feature. Whether we can use the test pins as DS280MB810 SEL0/1?

 

  • 0
    TI__Mastermind 19235 points

    Hi Frank,

    Related to: "From the datasheet, we can achieve it with SMBUS configuration. Currently my customer wants to make the transition within 50ms, whether the time is ok(how long it will take?"

    • The DS280MB810 switching time will be well within 50ms. The typical DS280MB810 analog mux switching time is around 500ns. I

    Related to: "Whether we can use pin configuration to get the  cross-point feature. Whether we can use the test pins as DS280MB810 SEL0/1?"

    • Yes, as captured in the DS280MB810 datasheet pin mode may be used to configure the Crosspoint. The pin mode is enabled by setting shared register 0x05[1]=1

    Addr

    [HEX]

    Bit

    Default

    [HEX]

    Mode

    EEPROM

    Field

    Description

    0x05

    0x00

    General

    7

    0

    RW

    N

    DISAB_EEPRM_CFG

    1: Disable Master Mode EEPROM Configuration (If not started, not effective midway or after configuration)

    0: Normal operation

    6

    0

    RW

    N

    CRC_EN

    RESERVED

    5

    0

    RW

    N

    ML_TEST

    _CONTROL

    RESERVED

    4

    0

    R

    N

    EEPROM_READING

    _DONE

    Sets 1 when EEPROM reading done

    3

    0

    R

    N

    RESERVED

    RESERVED

    2

    0

    R

    Y

    CAL_CLK_INV_DIS

    1: Disable the inversion of CAL_CLK_OUT

    0: Normal operation, CAL_CLK_OUT is inverted with respect to

    CAL_CLK_IN

    1

    0

    R

    N

    MUX_CONFIG_PIN_ CTRL

    1: MUXSEL0_TEST0 and MUXSEL1_TEST1 are used to configure the crosspoint mux. MUXSEL0_TEST0 controls the crosspoint for channels 0/1 and 4/5. MUXSEL1_TEST1 controls the crosspoint for channels 2/3 and 6/7. For mux pin-control, Reg_05[0] must also be 0, which is the power-on default value.

    0: Crosspoint mux is configured on a per-channel basis with Reg_0x06[0].

    0

    0

    R

    N

    TEST0_AS_CAL

    _CLK

    RESERVED

    Regards,

    Rodrigo Natal

    HSSC Applications Engineer

    From the datasheet, we can achieve it with SMBUS configuration. Currently my customer wants to make the transition within 50ms, whether the time is ok(how long it will take?